Windows Script Host Checks.vbs Virus Removal (March 2019 Update)

Parasite may reinstall itself multiple times if you don't delete its core files. We recommend downloading SpyHunter to scan for malicious programs installed with it. This may save you hours and cut down your time to about 15 minutes. 

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More information on SpyHunter, steps to uninstallEULAThreat Assessment Criteria, and Privacy Policy.

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This page aims to help you remove Checks.vbs. Our removal instructions work for Chrome, Firefox and Internet Explorer, as well as every version of Windows.

If the ads on your screen while you are browsing are getting unbearably overwhelming and if the default search engine or the starting page of your main browser have been altered in some way, you should know that there might be a browser hijacker inside your computer system. So, what is a browser hijacker – is it a dangerous virus program similar to a Trojan Horse virus or a Ransomware cryptovirus and does it pose any direct threat to your computer’s safety? Fortunately, if a hijacker is currently residing in your computer system, there is no need to get panicked since most such apps tend to be rather harmless, especially when compared to actual malware infections like the ones we already mentioned. Sure, a hijacker could infiltrate any of your browsers (Chrome, Firefox, IE as well as other popular browsing programs) and cause page redirects, ads-generation and unwanted changes to your browser’s settings, appearance and functionality. However, this doesn’t mean that the pesky piece of software would actually try to inflict any type of damage to your computer or to any of the data stored inside its hard-drives. Hijacker apps are mostly advertising-oriented tools and the main reason they get created in the first place is because their developers seek to earn money through promoting different products on the Internet. Popular revenue-earning models like Pay-Per-Click and Pay-Per-View is what allows hijackers to accumulate rather significant amounts of money for their creators. This also comes to explain why the advertising materials brought to your screen by such apps tend to be so unbearably aggressive and obstructive. After all, the more ads that get put on your screen, the greater the chance of you clicking on some of them and, in turn, generating more money for the people behind the hijacker.


Now, let’s focus on the main reason why we are writing this article – the so-called Checks.vbs browser hijacker. Similar to the rest of its type, this piece of software is capable of getting attached to your browser without you realizing it and, from there, starting to make changes to the browsing program and starting to spam your screen with obnoxious ads. It is a relatively new hijacker but many people currently have it on their PCs which is why we have prepared a removal guide for it:

Checks.vbs Removal

If you have a Windows virus, continue with the guide below.

If you have a Mac virus, please use our How to remove Ads on Mac guide.

If you have an Android virus, please use our Android Malware Removal guide.

If you have an iPhone virus, please use our iPhone Virus Removal guide


Some of the steps will likely require you to exit the page. Bookmark it for later reference.

Reboot in Safe Mode (use this guide if you don’t know how to do it).



We get asked this a lot, so we are putting it here: Removing parasite manually may take hours and damage your system in the process. We recommend downloading SpyHunter to see if it can detect parasite files for you.

Press CTRL + SHIFT + ESC at the same time and go to the Processes Tab (the “Details” Tab on Win 8 and 10). Try to determine which processes are dangerous. 


Right click on each of them and select Open File Location. Then scan the files with our free online virus scanner:

Drag and Drop Files Here to Scan
Maximum file size: 128MB.

This scanner is free and will always remain free for our website's users. You can find its full-page version at:

Scan Results

Virus Scanner Result

After you open their folder, end the processes that are infected, then delete their folders. 

Note: If you are sure something is part of the infection – delete it, even if the scanner doesn’t flag it. No anti-virus program can detect all infections. 


Hold together the Start Key and R. Type appwiz.cpl –> OK.


You are now in the Control Panel. Look for suspicious entries. Uninstall it/them.

Type msconfig in the search field and hit enter. A window will pop-up:


Startup —> Uncheck entries that have “Unknown” as Manufacturer or otherwise look suspicious.


Hold the Start Key and R –  copy + paste the following and click OK:

notepad %windir%/system32/Drivers/etc/hosts

A new file will open. If you are hacked, there will be a bunch of other IPs connected to you at the bottom. Look at the image below:

hosts_opt (1)

If there are suspicious IPs below “Localhost” – write to us in the comments.

Open the start menu and search for Network Connections (On Windows 10 you just write it after clicking the Windows button), press enter.

  1. Right-click on the Network Adapter you are using —> Properties —> Internet Protocol Version 4 (ICP/IP), click  Properties.
  2. The DNS line should be set to Obtain DNS server automatically. If it is not, set it yourself.
  3. Click on Advanced —> the DNS tab. Remove everything here (if there is something) —> OK.



  • After you complete this step, the threat will be gone from your browsers. Finish the next step as well or it may reappear on a system reboot.

Right click on the browser’s shortcut —> Properties.

NOTE: We are showing Google Chrome, but you can do this for Firefox and IE (or Edge).


Properties —–> Shortcut. In Target, remove everything after .exe.

ie9-10_512x512  Remove Checks.vbs from Internet Explorer:

Open IE, click  IE GEAR —–> Manage Add-ons.

pic 3

Find the threat —> Disable. Go to IE GEAR —–> Internet Options —> change the URL to whatever you use (if hijacked) —> Apply.

firefox-512 Remove Checks.vbs from Firefox:

Open Firefoxclick  mozilla menu  ——-> Add-ons —-> Extensions.

pic 6

Find the adware/malware —> Remove.
chrome-logo-transparent-backgroundRemove Checks.vbs from Chrome:

Close Chrome. Navigate to:

 C:/Users/!!!!USER NAME!!!!/AppData/Local/Google/Chrome/User Data. There is a Folder called “Default” inside:

Rename the Folder to Backup Default

Rename it to Backup Default. Restart Chrome.


To remove parasite on your own, you may have to meddle with system files and registries. If you were to do this, you need to be extremely careful, because you may damage your system.

If you want to avoid the risk, we recommend downloading SpyHunter
a professional malware removal tool.

More information on SpyHunter, steps to uninstallEULAThreat Assessment Criteria, and Privacy Policy.

Type Regedit in the windows search field and press Enter.

Inside, press CTRL and F together and type the threat’s Name. Right click and delete any entries you find with a similar name. If they don’t show up this way, go manually to these directories and delete/uninstall them:

  • HKEY_CURRENT_USER—-Software—–Random Directory. It could be any one of them – ask us if you can’t discern which ones are malicious.
    HKEY_CURRENT_USER—-Software—Microsoft—-Windows—CurrentVersion—Run– Random
    HKEY_CURRENT_USER—-Software—Microsoft—Internet Explorer—-Main—- Random

Use the removal instructions that that the guide contains and make sure that you uninstall and remove the irritating software component that Checks.vbs is. Aside from the frustration that the invasive ads and nagging page-redirects are likely to cause, there’s actually a more important reason why you might want to eliminate this unpleasant app. As said before, browser hijacker apps like Checks.vbs and viruses like Ransomware, Trojans and other threats such as Spyware, Rootkits, Worms and so on are not the same in terms of harmfulness. While a real piece of malware can indeed threaten your online (and offline) security and potentially cause severe damage to your computer and to the files that are inside of it, a hijacker the likes of Checks.vbs would mostly be harmless in comparison. That said, however, browser hijacker applications are not to be fully trusted because of the nature of their advertising campaigns. There’s hardly ever any control over what advertising materials get streamed to your screen while the hijacker is active on your computer. For all you know, the next ad that gets presented to you might actually be a redirect link in disguise that is going to land you on some sketchy and maybe even malware-infested page or site. So, even though apps like Checks.vbs are generally not harmful on their own, they could still represent an actual security risk, especially if you are not careful and click on all of the ads that they put on your screen.

The ways you could land a hijacker

There are a lot of different methods that a creator of browser hijacker applications such as Checks.vbs could make use of so as to ensure that their creation makes to onto as many PCs as possible. Anything from large-scale spam message campaigns to the use of unreliable ads displayed by obscure sites can be used to distribute hijackers. A very popular method is also the use of file-bundles. In this case, the unwanted app would be put inside a software installer for another program so as to get installed alongside that other program. Of course, you can choose to leave the hijacker out but you’d usually need to use the Advanced setup settings for that while going through the setup manager. Make sure you remember to do that each and every time you are about to install a new program from now on in order to avoid landing apps like Checks.vbs in the future.


Name Checks.vbs
Type  Adware/Browser Hijacker
Danger Level Medium (nowhere near threats like Ransomware, but still a security risk)
Symptoms  It’s easy to notice a hijacker – there would be all kinds of ads, banners, unwanted browser changes and other browser-related disturbances and irregularities to give away the hijacker.
Distribution Method Most hijackers get distributed through file-bundling or with the help of misleading advertisements and via spam e-mail campaigns.
Detection Tool

If the guide doesn’t help, download the anti-virus program we recommended or try our free online virus scanner. Also, you can always ask us in the comments for help!

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